![Spider and Secondary Diffraction: what to do, what to avoid - ATM, Optics and DIY Forum - Cloudy Nights Spider and Secondary Diffraction: what to do, what to avoid - ATM, Optics and DIY Forum - Cloudy Nights](http://www.cloudynights.com/uploads/gallery/album_4746/gallery_217007_4746_176849.jpg)
Spider and Secondary Diffraction: what to do, what to avoid - ATM, Optics and DIY Forum - Cloudy Nights
![The diffraction pattern of the Bahtinov mask is used in telescopes to focus accurately. I made this simulation to show how it works. : r/Astronomy The diffraction pattern of the Bahtinov mask is used in telescopes to focus accurately. I made this simulation to show how it works. : r/Astronomy](https://external-preview.redd.it/nalKtlwGfEw0TWTQUHNxgxUy3RoLowdYJy8NQCmd5ZM.png?width=640&crop=smart&format=pjpg&auto=webp&s=78b02221bfdd7292828428284329c001dc615f90)
The diffraction pattern of the Bahtinov mask is used in telescopes to focus accurately. I made this simulation to show how it works. : r/Astronomy
![Efficient full-path optical calculation of scalar and vector diffraction using the Bluestein method | Light: Science & Applications Efficient full-path optical calculation of scalar and vector diffraction using the Bluestein method | Light: Science & Applications](https://media.springernature.com/m685/springer-static/image/art%3A10.1038%2Fs41377-020-00362-z/MediaObjects/41377_2020_362_Fig1_HTML.png)
Efficient full-path optical calculation of scalar and vector diffraction using the Bluestein method | Light: Science & Applications
![Spider and Secondary Diffraction: what to do, what to avoid - ATM, Optics and DIY Forum - Cloudy Nights Spider and Secondary Diffraction: what to do, what to avoid - ATM, Optics and DIY Forum - Cloudy Nights](http://www.cloudynights.com/uploads/gallery/album_4746/gallery_217007_4746_101263.jpg)
Spider and Secondary Diffraction: what to do, what to avoid - ATM, Optics and DIY Forum - Cloudy Nights
![What would diffraction patterns look if different James Webb telescope configurations were used? I couldn't find an answer, so I did some simulations, it uses visible light rather than IR, but the What would diffraction patterns look if different James Webb telescope configurations were used? I couldn't find an answer, so I did some simulations, it uses visible light rather than IR, but the](https://images-cdn.9gag.com/photo/aNPEWb3_700b.jpg)